Re: [PATCH] netfilter: xtables: stackptr should be percpu

[Patrick McHardy]

Jan Engelhardt wrote:
> On Monday 2010-05-31 15:13, Eric Dumazet wrote:
>> All cpus share a single cache line for their 'stackptr' storage,
>> introduced in commit f3c5c1bfd4
>>
>> This is a stable candidate (2.6.34)
> 
> Stackptr was first introduced for 2.6.35-rcX.
> 
>> +	i->stackptr = alloc_percpu(unsigned int);
>> 	if (i->stackptr == NULL)
>> 		return -ENOMEM;
>> -	memset(i->stackptr, 0, size);
>>
>> 	size = sizeof(void **) * nr_cpu_ids;
>> 	if (size > PAGE_SIZE)
> 
> Are alloc_percpu areas cleared?
> 
> Acked-By: Jan Engelhardt <jengelh@xxxxxxxxxx>

Applied, thanks.
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